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gimp/app/actions/layers-commands.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "actions-types.h"
#include "config/gimpcoreconfig.h"
#include "core/gimp.h"
#include "core/gimpchannel.h"
#include "core/gimpcontext.h"
#include "core/gimpgrouplayer.h"
#include "core/gimpimage.h"
#include "core/gimpimage-merge.h"
#include "core/gimpimage-undo.h"
#include "core/gimpimage-undo-push.h"
#include "core/gimpitemundo.h"
#include "core/gimplayer-floating-sel.h"
#include "core/gimppickable.h"
#include "core/gimppickable-auto-shrink.h"
#include "core/gimptoolinfo.h"
#include "core/gimpundostack.h"
#include "core/gimpprogress.h"
#include "text/gimptext.h"
#include "text/gimptext-vectors.h"
#include "text/gimptextlayer.h"
#include "vectors/gimpvectors-warp.h"
#include "widgets/gimpaction.h"
#include "widgets/gimpdock.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpprogressdialog.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpimagewindow.h"
#include "tools/gimptexttool.h"
#include "tools/tool_manager.h"
#include "dialogs/layer-add-mask-dialog.h"
#include "dialogs/layer-options-dialog.h"
#include "dialogs/resize-dialog.h"
#include "dialogs/scale-dialog.h"
#include "actions.h"
#include "layers-commands.h"
#include "gimp-intl.h"
static const GimpLayerModeEffects layer_modes[] =
{
GIMP_NORMAL_MODE,
GIMP_DISSOLVE_MODE,
GIMP_MULTIPLY_MODE,
GIMP_DIVIDE_MODE,
GIMP_SCREEN_MODE,
GIMP_OVERLAY_MODE,
GIMP_DODGE_MODE,
GIMP_BURN_MODE,
GIMP_HARDLIGHT_MODE,
GIMP_SOFTLIGHT_MODE,
GIMP_GRAIN_EXTRACT_MODE,
GIMP_GRAIN_MERGE_MODE,
GIMP_DIFFERENCE_MODE,
GIMP_ADDITION_MODE,
GIMP_SUBTRACT_MODE,
GIMP_DARKEN_ONLY_MODE,
GIMP_LIGHTEN_ONLY_MODE,
GIMP_HUE_MODE,
GIMP_SATURATION_MODE,
GIMP_COLOR_MODE,
GIMP_VALUE_MODE
};
/* local function prototypes */
static void layers_new_layer_response (GtkWidget *widget,
gint response_id,
LayerOptionsDialog *dialog);
static void layers_edit_layer_response (GtkWidget *widget,
gint response_id,
LayerOptionsDialog *dialog);
static void layers_add_mask_response (GtkWidget *widget,
gint response_id,
LayerAddMaskDialog *dialog);
static void layers_scale_layer_callback (GtkWidget *dialog,
GimpViewable *viewable,
gint width,
gint height,
GimpUnit unit,
GimpInterpolationType interpolation,
gdouble xresolution,
gdouble yresolution,
GimpUnit resolution_unit,
gpointer data);
static void layers_resize_layer_callback (GtkWidget *dialog,
GimpViewable *viewable,
gint width,
gint height,
GimpUnit unit,
gint offset_x,
gint offset_y,
GimpItemSet unused,
gboolean unused2,
gpointer data);
static gint layers_mode_index (GimpLayerModeEffects layer_mode);
/* private variables */
static GimpFillType layer_fill_type = GIMP_FILL_TRANSPARENT;
static gchar *layer_name = NULL;
static GimpUnit layer_resize_unit = GIMP_UNIT_PIXEL;
static GimpUnit layer_scale_unit = GIMP_UNIT_PIXEL;
static GimpInterpolationType layer_scale_interp = -1;
static GimpAddMaskType layer_add_mask_type = GIMP_ADD_MASK_WHITE;
static gboolean layer_mask_invert = FALSE;
/* public functions */
void
layers_text_tool_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
GtkWidget *widget;
GimpTool *active_tool;
return_if_no_layer (image, layer, data);
return_if_no_widget (widget, data);
if (! gimp_item_is_text_layer (GIMP_ITEM (layer)))
{
layers_edit_attributes_cmd_callback (action, data);
return;
}
active_tool = tool_manager_get_active (image->gimp);
if (! GIMP_IS_TEXT_TOOL (active_tool))
{
GimpToolInfo *tool_info = gimp_get_tool_info (image->gimp,
"gimp-text-tool");
if (GIMP_IS_TOOL_INFO (tool_info))
{
gimp_context_set_tool (action_data_get_context (data), tool_info);
active_tool = tool_manager_get_active (image->gimp);
}
}
if (GIMP_IS_TEXT_TOOL (active_tool))
gimp_text_tool_set_layer (GIMP_TEXT_TOOL (active_tool), layer);
}
void
layers_edit_attributes_cmd_callback (GtkAction *action,
gpointer data)
{
LayerOptionsDialog *dialog;
GimpImage *image;
GimpLayer *layer;
GtkWidget *widget;
return_if_no_layer (image, layer, data);
return_if_no_widget (widget, data);
dialog = layer_options_dialog_new (gimp_item_get_image (GIMP_ITEM (layer)),
layer,
action_data_get_context (data),
widget,
gimp_object_get_name (layer),
layer_fill_type,
_("Layer Attributes"),
"gimp-layer-edit",
"gtk-edit",
_("Edit Layer Attributes"),
GIMP_HELP_LAYER_EDIT);
g_signal_connect (dialog->dialog, "response",
G_CALLBACK (layers_edit_layer_response),
dialog);
gtk_widget_show (dialog->dialog);
}
void
layers_new_cmd_callback (GtkAction *action,
gpointer data)
{
LayerOptionsDialog *dialog;
GimpImage *image;
GtkWidget *widget;
GimpLayer *floating_sel;
return_if_no_image (image, data);
return_if_no_widget (widget, data);
/* If there is a floating selection, the new command transforms
* the current fs into a new layer
*/
if ((floating_sel = gimp_image_get_floating_selection (image)))
{
GError *error = NULL;
if (! floating_sel_to_layer (floating_sel, &error))
{
gimp_message_literal (image->gimp,
G_OBJECT (widget), GIMP_MESSAGE_WARNING,
error->message);
g_clear_error (&error);
return;
}
gimp_image_flush (image);
return;
}
dialog = layer_options_dialog_new (image, NULL,
action_data_get_context (data),
widget,
layer_name ? layer_name : _("Layer"),
layer_fill_type,
_("New Layer"),
"gimp-layer-new",
GIMP_STOCK_LAYER,
_("Create a New Layer"),
GIMP_HELP_LAYER_NEW);
g_signal_connect (dialog->dialog, "response",
G_CALLBACK (layers_new_layer_response),
dialog);
gtk_widget_show (dialog->dialog);
}
void
layers_new_last_vals_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GtkWidget *widget;
GimpLayer *floating_sel;
GimpLayer *new_layer;
gint width, height;
gint off_x, off_y;
gdouble opacity;
GimpLayerModeEffects mode;
return_if_no_image (image, data);
return_if_no_widget (widget, data);
/* If there is a floating selection, the new command transforms
* the current fs into a new layer
*/
if ((floating_sel = gimp_image_get_floating_selection (image)))
{
GError *error = NULL;
if (! floating_sel_to_layer (floating_sel, &error))
{
gimp_message_literal (image->gimp, G_OBJECT (widget),
GIMP_MESSAGE_WARNING, error->message);
g_clear_error (&error);
return;
}
gimp_image_flush (image);
return;
}
if (GIMP_IS_LAYER (GIMP_ACTION (action)->viewable))
{
GimpLayer *template = GIMP_LAYER (GIMP_ACTION (action)->viewable);
gimp_item_get_offset (GIMP_ITEM (template), &off_x, &off_y);
width = gimp_item_get_width (GIMP_ITEM (template));
height = gimp_item_get_height (GIMP_ITEM (template));
opacity = gimp_layer_get_opacity (template);
mode = gimp_layer_get_mode (template);
}
else
{
width = gimp_image_get_width (image);
height = gimp_image_get_height (image);
off_x = 0;
off_y = 0;
opacity = 1.0;
mode = GIMP_NORMAL_MODE;
}
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_EDIT_PASTE,
_("New Layer"));
new_layer = gimp_layer_new (image, width, height,
gimp_image_get_layer_format (image, TRUE),
layer_name,
opacity, mode);
gimp_drawable_fill (GIMP_DRAWABLE (new_layer),
action_data_get_context (data),
layer_fill_type);
gimp_item_translate (GIMP_ITEM (new_layer), off_x, off_y, FALSE);
gimp_image_add_layer (image, new_layer,
GIMP_IMAGE_ACTIVE_PARENT, -1, TRUE);
gimp_image_undo_group_end (image);
gimp_image_flush (image);
}
void
layers_new_from_visible_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
GimpPickable *pickable;
return_if_no_image (image, data);
pickable = GIMP_PICKABLE (image);
gimp_pickable_flush (pickable);
layer = gimp_layer_new_from_buffer (gimp_pickable_get_buffer (pickable),
image,
gimp_image_get_layer_format (image, TRUE),
_("Visible"),
GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
gimp_image_add_layer (image, layer,
GIMP_IMAGE_ACTIVE_PARENT, -1, TRUE);
gimp_image_flush (image);
}
void
layers_new_group_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
return_if_no_image (image, data);
layer = gimp_group_layer_new (image);
gimp_image_add_layer (image, layer,
GIMP_IMAGE_ACTIVE_PARENT, -1, TRUE);
gimp_image_flush (image);
}
void
layers_select_cmd_callback (GtkAction *action,
gint value,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
GimpContainer *container;
GimpLayer *new_layer;
return_if_no_image (image, data);
layer = gimp_image_get_active_layer (image);
if (layer)
container = gimp_item_get_container (GIMP_ITEM (layer));
else
container = gimp_image_get_layers (image);
new_layer = (GimpLayer *) action_select_object ((GimpActionSelectType) value,
container,
(GimpObject *) layer);
if (new_layer && new_layer != layer)
{
gimp_image_set_active_layer (image, new_layer);
gimp_image_flush (image);
}
}
void
layers_raise_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
return_if_no_layer (image, layer, data);
gimp_image_raise_item (image, GIMP_ITEM (layer), NULL);
gimp_image_flush (image);
}
void
layers_raise_to_top_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
return_if_no_layer (image, layer, data);
gimp_image_raise_item_to_top (image, GIMP_ITEM (layer));
gimp_image_flush (image);
}
void
layers_lower_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
return_if_no_layer (image, layer, data);
gimp_image_lower_item (image, GIMP_ITEM (layer), NULL);
gimp_image_flush (image);
}
void
layers_lower_to_bottom_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
return_if_no_layer (image, layer, data);
gimp_image_lower_item_to_bottom (image, GIMP_ITEM (layer));
gimp_image_flush (image);
}
void
layers_duplicate_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
GimpLayer *new_layer;
return_if_no_layer (image, layer, data);
new_layer = GIMP_LAYER (gimp_item_duplicate (GIMP_ITEM (layer),
G_TYPE_FROM_INSTANCE (layer)));
/* use the actual parent here, not GIMP_IMAGE_ACTIVE_PARENT because
* the latter would add a duplicated group inside itself instead of
* above it
*/
gimp_image_add_layer (image, new_layer,
gimp_layer_get_parent (layer), -1,
TRUE);
gimp_image_flush (image);
}
void
layers_anchor_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
return_if_no_layer (image, layer, data);
if (gimp_layer_is_floating_sel (layer))
{
floating_sel_anchor (layer);
gimp_image_flush (image);
}
}
void
layers_merge_down_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
return_if_no_layer (image, layer, data);
gimp_image_merge_down (image, layer, action_data_get_context (data),
GIMP_EXPAND_AS_NECESSARY, NULL);
gimp_image_flush (image);
}
void
layers_merge_group_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
return_if_no_layer (image, layer, data);
gimp_image_merge_group_layer (image, GIMP_GROUP_LAYER (layer));
gimp_image_flush (image);
}
void
layers_delete_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
return_if_no_layer (image, layer, data);
gimp_image_remove_layer (image, layer, TRUE, NULL);
gimp_image_flush (image);
}
void
layers_text_discard_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
return_if_no_layer (image, layer, data);
if (GIMP_IS_TEXT_LAYER (layer))
gimp_text_layer_discard (GIMP_TEXT_LAYER (layer));
}
void
layers_text_to_vectors_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
return_if_no_layer (image, layer, data);
if (GIMP_IS_TEXT_LAYER (layer))
{
GimpVectors *vectors;
gint x, y;
vectors = gimp_text_vectors_new (image, GIMP_TEXT_LAYER (layer)->text);
gimp_item_get_offset (GIMP_ITEM (layer), &x, &y);
gimp_item_translate (GIMP_ITEM (vectors), x, y, FALSE);
gimp_image_add_vectors (image, vectors,
GIMP_IMAGE_ACTIVE_PARENT, -1, TRUE);
gimp_image_flush (image);
}
}
void
layers_text_along_vectors_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
GimpVectors *vectors;
return_if_no_layer (image, layer, data);
return_if_no_vectors (image, vectors, data);
if (GIMP_IS_TEXT_LAYER (layer))
{
GimpVectors *new_vectors;
new_vectors = gimp_text_vectors_new (image, GIMP_TEXT_LAYER (layer)->text);
gimp_vectors_warp_vectors (vectors, new_vectors,
0.5 * gimp_item_get_height (GIMP_ITEM (layer)));
gimp_item_set_visible (GIMP_ITEM (new_vectors), TRUE, FALSE);
gimp_image_add_vectors (image, new_vectors,
GIMP_IMAGE_ACTIVE_PARENT, -1, TRUE);
gimp_image_flush (image);
}
}
void
layers_resize_cmd_callback (GtkAction *action,
gpointer data)
{
GimpDisplay *display = NULL;
GimpImage *image;
GimpLayer *layer;
GtkWidget *widget;
GtkWidget *dialog;
return_if_no_layer (image, layer, data);
return_if_no_widget (widget, data);
if (GIMP_IS_IMAGE_WINDOW (data))
display = action_data_get_display (data);
if (layer_resize_unit != GIMP_UNIT_PERCENT && display)
layer_resize_unit = gimp_display_get_shell (display)->unit;
dialog = resize_dialog_new (GIMP_VIEWABLE (layer),
action_data_get_context (data),
_("Set Layer Boundary Size"), "gimp-layer-resize",
widget,
gimp_standard_help_func, GIMP_HELP_LAYER_RESIZE,
layer_resize_unit,
layers_resize_layer_callback,
action_data_get_context (data));
gtk_widget_show (dialog);
}
void
layers_resize_to_image_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
return_if_no_layer (image, layer, data);
gimp_layer_resize_to_image (layer, action_data_get_context (data));
gimp_image_flush (image);
}
void
layers_scale_cmd_callback (GtkAction *action,
gpointer data)
{
GimpDisplay *display = NULL;
GimpImage *image;
GimpLayer *layer;
GtkWidget *widget;
GtkWidget *dialog;
return_if_no_layer (image, layer, data);
return_if_no_widget (widget, data);
if (GIMP_IS_IMAGE_WINDOW (data))
display = action_data_get_display (data);
if (layer_scale_unit != GIMP_UNIT_PERCENT && display)
layer_scale_unit = gimp_display_get_shell (display)->unit;
if (layer_scale_interp == -1)
layer_scale_interp = image->gimp->config->interpolation_type;
dialog = scale_dialog_new (GIMP_VIEWABLE (layer),
action_data_get_context (data),
_("Scale Layer"), "gimp-layer-scale",
widget,
gimp_standard_help_func, GIMP_HELP_LAYER_SCALE,
layer_scale_unit,
layer_scale_interp,
layers_scale_layer_callback,
display);
gtk_widget_show (dialog);
}
void
layers_crop_to_selection_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
GtkWidget *widget;
gint x1, y1, x2, y2;
gint off_x, off_y;
return_if_no_layer (image, layer, data);
return_if_no_widget (widget, data);
if (! gimp_channel_bounds (gimp_image_get_mask (image),
&x1, &y1, &x2, &y2))
{
gimp_message_literal (image->gimp,
G_OBJECT (widget), GIMP_MESSAGE_WARNING,
_("Cannot crop because the current selection is empty."));
return;
}
gimp_item_get_offset (GIMP_ITEM (layer), &off_x, &off_y);
off_x -= x1;
off_y -= y1;
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_ITEM_RESIZE,
_("Crop Layer to Selection"));
gimp_item_resize (GIMP_ITEM (layer), action_data_get_context (data),
x2 - x1, y2 - y1, off_x, off_y);
gimp_image_undo_group_end (image);
gimp_image_flush (image);
}
void
layers_crop_to_content_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
GtkWidget *widget;
gint x1, y1, x2, y2;
return_if_no_layer (image, layer, data);
return_if_no_widget (widget, data);
if (! gimp_pickable_auto_shrink (GIMP_PICKABLE (layer),
0, 0,
gimp_item_get_width (GIMP_ITEM (layer)),
gimp_item_get_height (GIMP_ITEM (layer)),
&x1, &y1, &x2, &y2))
{
gimp_message_literal (image->gimp,
G_OBJECT (widget), GIMP_MESSAGE_WARNING,
_("Cannot crop because the active layer has no content."));
return;
}
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_ITEM_RESIZE,
_("Crop Layer to Content"));
gimp_item_resize (GIMP_ITEM (layer), action_data_get_context (data),
x2 - x1, y2 - y1, -x1, -y1);
gimp_image_undo_group_end (image);
gimp_image_flush (image);
}
void
layers_mask_add_cmd_callback (GtkAction *action,
gpointer data)
{
LayerAddMaskDialog *dialog;
GimpImage *image;
GimpLayer *layer;
GtkWidget *widget;
return_if_no_layer (image, layer, data);
return_if_no_widget (widget, data);
dialog = layer_add_mask_dialog_new (layer, action_data_get_context (data),
widget,
layer_add_mask_type, layer_mask_invert);
g_signal_connect (dialog->dialog, "response",
G_CALLBACK (layers_add_mask_response),
dialog);
gtk_widget_show (dialog->dialog);
}
void
layers_mask_apply_cmd_callback (GtkAction *action,
gint value,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
GimpMaskApplyMode mode;
return_if_no_layer (image, layer, data);
mode = (GimpMaskApplyMode) value;
if (gimp_layer_get_mask (layer))
{
gimp_layer_apply_mask (layer, mode, TRUE);
gimp_image_flush (image);
}
}
void
layers_mask_edit_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
GimpLayerMask *mask;
return_if_no_layer (image, layer, data);
mask = gimp_layer_get_mask (layer);
if (mask)
{
gboolean active;
active = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
gimp_layer_set_edit_mask (layer, active);
gimp_image_flush (image);
}
}
void
layers_mask_show_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
GimpLayerMask *mask;
return_if_no_layer (image, layer, data);
mask = gimp_layer_get_mask (layer);
if (mask)
{
gboolean active;
active = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
gimp_layer_set_show_mask (layer, active, TRUE);
gimp_image_flush (image);
}
}
void
layers_mask_disable_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
GimpLayerMask *mask;
return_if_no_layer (image, layer, data);
mask = gimp_layer_get_mask (layer);
if (mask)
{
gboolean active;
active = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
gimp_layer_set_apply_mask (layer, ! active, TRUE);
gimp_image_flush (image);
}
}
void
layers_mask_to_selection_cmd_callback (GtkAction *action,
gint value,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
GimpLayerMask *mask;
return_if_no_layer (image, layer, data);
mask = gimp_layer_get_mask (layer);
if (mask)
{
gimp_item_to_selection (GIMP_ITEM (mask),
(GimpChannelOps) value,
TRUE, FALSE, 0.0, 0.0);
gimp_image_flush (image);
}
}
void
layers_alpha_add_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
return_if_no_layer (image, layer, data);
if (! gimp_drawable_has_alpha (GIMP_DRAWABLE (layer)))
{
gimp_layer_add_alpha (layer);
gimp_image_flush (image);
}
}
void
layers_alpha_remove_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
return_if_no_layer (image, layer, data);
if (gimp_drawable_has_alpha (GIMP_DRAWABLE (layer)))
{
gimp_layer_flatten (layer, action_data_get_context (data));
gimp_image_flush (image);
}
}
void
layers_alpha_to_selection_cmd_callback (GtkAction *action,
gint value,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
return_if_no_layer (image, layer, data);
gimp_item_to_selection (GIMP_ITEM (layer),
(GimpChannelOps) value,
TRUE, FALSE, 0.0, 0.0);
gimp_image_flush (image);
}
void
layers_opacity_cmd_callback (GtkAction *action,
gint value,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
gdouble opacity;
GimpUndo *undo;
gboolean push_undo = TRUE;
return_if_no_layer (image, layer, data);
undo = gimp_image_undo_can_compress (image, GIMP_TYPE_ITEM_UNDO,
GIMP_UNDO_LAYER_OPACITY);
if (undo && GIMP_ITEM_UNDO (undo)->item == GIMP_ITEM (layer))
push_undo = FALSE;
opacity = action_select_value ((GimpActionSelectType) value,
gimp_layer_get_opacity (layer),
0.0, 1.0, 1.0,
1.0 / 255.0, 0.01, 0.1, 0.0, FALSE);
gimp_layer_set_opacity (layer, opacity, push_undo);
gimp_image_flush (image);
}
void
layers_mode_cmd_callback (GtkAction *action,
gint value,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
GimpLayerModeEffects layer_mode;
gint index;
GimpUndo *undo;
gboolean push_undo = TRUE;
return_if_no_layer (image, layer, data);
undo = gimp_image_undo_can_compress (image, GIMP_TYPE_ITEM_UNDO,
GIMP_UNDO_LAYER_MODE);
if (undo && GIMP_ITEM_UNDO (undo)->item == GIMP_ITEM (layer))
push_undo = FALSE;
layer_mode = gimp_layer_get_mode (layer);
index = action_select_value ((GimpActionSelectType) value,
layers_mode_index (layer_mode),
0, G_N_ELEMENTS (layer_modes) - 1, 0,
0.0, 1.0, 1.0, 0.0, FALSE);
gimp_layer_set_mode (layer, layer_modes[index], push_undo);
gimp_image_flush (image);
}
void
layers_lock_alpha_cmd_callback (GtkAction *action,
gpointer data)
{
GimpImage *image;
GimpLayer *layer;
gboolean lock_alpha;
return_if_no_layer (image, layer, data);
lock_alpha = gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action));
if (lock_alpha != gimp_layer_get_lock_alpha (layer))
{
GimpUndo *undo;
gboolean push_undo = TRUE;
undo = gimp_image_undo_can_compress (image, GIMP_TYPE_ITEM_UNDO,
GIMP_UNDO_LAYER_LOCK_ALPHA);
if (undo && GIMP_ITEM_UNDO (undo)->item == GIMP_ITEM (layer))
push_undo = FALSE;
gimp_layer_set_lock_alpha (layer, lock_alpha, push_undo);
gimp_image_flush (image);
}
}
/* private functions */
static void
layers_new_layer_response (GtkWidget *widget,
gint response_id,
LayerOptionsDialog *dialog)
{
if (response_id == GTK_RESPONSE_OK)
{
GimpLayer *layer;
if (layer_name)
g_free (layer_name);
layer_name =
g_strdup (gtk_entry_get_text (GTK_ENTRY (dialog->name_entry)));
layer_fill_type = dialog->fill_type;
dialog->xsize =
RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (dialog->size_se),
0));
dialog->ysize =
RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (dialog->size_se),
1));
layer = gimp_layer_new (dialog->image,
dialog->xsize,
dialog->ysize,
gimp_image_get_layer_format (dialog->image, TRUE),
layer_name,
GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
if (layer)
{
gimp_drawable_fill (GIMP_DRAWABLE (layer),
dialog->context,
layer_fill_type);
gimp_image_add_layer (dialog->image, layer,
GIMP_IMAGE_ACTIVE_PARENT, -1, TRUE);
gimp_image_flush (dialog->image);
}
else
{
g_warning ("%s: could not allocate new layer", G_STRFUNC);
}
}
gtk_widget_destroy (dialog->dialog);
}
static void
layers_edit_layer_response (GtkWidget *widget,
gint response_id,
LayerOptionsDialog *dialog)
{
if (response_id == GTK_RESPONSE_OK)
{
GimpLayer *layer = dialog->layer;
const gchar *new_name;
new_name = gtk_entry_get_text (GTK_ENTRY (dialog->name_entry));
if (strcmp (new_name, gimp_object_get_name (layer)))
{
GError *error = NULL;
if (gimp_item_rename (GIMP_ITEM (layer), new_name, &error))
{
gimp_image_flush (dialog->image);
}
else
{
gimp_message_literal (dialog->image->gimp,
G_OBJECT (widget), GIMP_MESSAGE_WARNING,
error->message);
g_clear_error (&error);
return;
}
}
if (dialog->rename_toggle &&
gimp_item_is_text_layer (GIMP_ITEM (layer)))
{
g_object_set (layer,
"auto-rename",
gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (dialog->rename_toggle)),
NULL);
}
}
gtk_widget_destroy (dialog->dialog);
}
static void
layers_add_mask_response (GtkWidget *widget,
gint response_id,
LayerAddMaskDialog *dialog)
{
if (response_id == GTK_RESPONSE_OK)
{
GimpLayer *layer = dialog->layer;
GimpImage *image = gimp_item_get_image (GIMP_ITEM (layer));
GimpLayerMask *mask;
if (dialog->add_mask_type == GIMP_ADD_MASK_CHANNEL &&
! dialog->channel)
{
gimp_message_literal (image->gimp,
G_OBJECT (widget), GIMP_MESSAGE_WARNING,
_("Please select a channel first"));
return;
}
layer_add_mask_type = dialog->add_mask_type;
layer_mask_invert = dialog->invert;
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_LAYER_ADD_MASK,
_("Add Layer Mask"));
mask = gimp_layer_create_mask (layer, layer_add_mask_type,
dialog->channel);
if (layer_mask_invert)
gimp_channel_invert (GIMP_CHANNEL (mask), FALSE);
gimp_layer_add_mask (layer, mask, TRUE, NULL);
gimp_image_undo_group_end (image);
gimp_image_flush (image);
}
gtk_widget_destroy (dialog->dialog);
}
static void
layers_scale_layer_callback (GtkWidget *dialog,
GimpViewable *viewable,
gint width,
gint height,
GimpUnit unit,
GimpInterpolationType interpolation,
gdouble xresolution, /* unused */
gdouble yresolution, /* unused */
GimpUnit resolution_unit,/* unused */
gpointer data)
{
GimpDisplay *display = GIMP_DISPLAY (data);
layer_scale_unit = unit;
layer_scale_interp = interpolation;
if (width > 0 && height > 0)
{
GimpItem *item = GIMP_ITEM (viewable);
GimpProgress *progress;
GtkWidget *progress_dialog = NULL;
gtk_widget_destroy (dialog);
if (width == gimp_item_get_width (item) &&
height == gimp_item_get_height (item))
return;
if (display)
{
progress = GIMP_PROGRESS (display);
}
else
{
progress_dialog = gimp_progress_dialog_new ();
progress = GIMP_PROGRESS (progress_dialog);
}
progress = gimp_progress_start (progress, FALSE, _("Scaling"));
gimp_item_scale_by_origin (item,
width, height, interpolation,
progress, TRUE);
if (progress)
gimp_progress_end (progress);
if (progress_dialog)
gtk_widget_destroy (progress_dialog);
gimp_image_flush (gimp_item_get_image (item));
}
else
{
g_warning ("Scale Error: "
"Both width and height must be greater than zero.");
}
}
static void
layers_resize_layer_callback (GtkWidget *dialog,
GimpViewable *viewable,
gint width,
gint height,
GimpUnit unit,
gint offset_x,
gint offset_y,
GimpItemSet unused,
gboolean unused2,
gpointer data)
{
GimpContext *context = GIMP_CONTEXT (data);
layer_resize_unit = unit;
if (width > 0 && height > 0)
{
GimpItem *item = GIMP_ITEM (viewable);
gtk_widget_destroy (dialog);
if (width == gimp_item_get_width (item) &&
height == gimp_item_get_height (item))
return;
gimp_item_resize (item, context,
width, height, offset_x, offset_y);
gimp_image_flush (gimp_item_get_image (item));
}
else
{
g_warning ("Resize Error: "
"Both width and height must be greater than zero.");
}
}
static gint
layers_mode_index (GimpLayerModeEffects layer_mode)
{
gint i = 0;
while (i < (G_N_ELEMENTS (layer_modes) - 1) && layer_modes[i] != layer_mode)
i++;
return i;
}
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